package handlers

import (
	"net/http"

	"gitee.com/konglinglong/car/backend/internal/auth"
	"gitee.com/konglinglong/car/backend/internal/cache"
	"gitee.com/konglinglong/car/backend/internal/models"
	"gitee.com/konglinglong/car/backend/internal/storage"
	"github.com/gin-gonic/gin"
	"gorm.io/gorm"
)

// Handlers contains all HTTP handlers
type Handlers struct {
	db         *gorm.DB
	cache      cache.Client
	storage    storage.Client
	jwtManager *auth.JWTManager
}

// NewHandlers creates a new handlers instance
func NewHandlers(db *gorm.DB, cache cache.Client, storage storage.Client, jwtManager *auth.JWTManager) *Handlers {
	return &Handlers{
		db:         db,
		cache:      cache,
		storage:    storage,
		jwtManager: jwtManager,
	}
}

// HealthCheck handles health check requests
func (h *Handlers) HealthCheck(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{
		"status":  "ok",
		"service": "car-registry",
		"version": "1.0.0",
	})
}

// LoginRequest represents the login request payload
type LoginRequest struct {
	Username string `json:"username" binding:"required"`
	Password string `json:"password" binding:"required"`
}

// LoginResponse represents the login response
type LoginResponse struct {
	Token        string `json:"token"`
	RefreshToken string `json:"refresh_token"`
	User         UserInfo `json:"user"`
}

// UserInfo represents user information
type UserInfo struct {
	ID       string `json:"id"`
	Username string `json:"username"`
	Email    string `json:"email"`
	FullName string `json:"full_name"`
	IsAdmin  bool   `json:"is_admin"`
}

// Authentication handlers
func (h *Handlers) Login(c *gin.Context) {
	var req LoginRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	// Find user by username
	var user models.User
	if err := h.db.Where("username = ? AND is_active = ?", req.Username, true).First(&user).Error; err != nil {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid credentials"})
		return
	}

	// Verify password
	if !auth.CheckPasswordHash(req.Password, user.PasswordHash) {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "Invalid credentials"})
		return
	}

	// Generate JWT token
	role := "user"
	if user.IsAdmin {
		role = "admin"
	}
	token, err := h.jwtManager.GenerateToken(user.ID, user.Username, role)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to generate token"})
		return
	}

	// For now, use the same token as refresh token (simplified implementation)
	refreshToken := token

	// Return response
	response := LoginResponse{
		Token:        token,
		RefreshToken: refreshToken,
		User: UserInfo{
			ID:       user.ID,
			Username: user.Username,
			Email:    user.Email,
			FullName: user.FullName,
			IsAdmin:  user.IsAdmin,
		},
	}

	c.JSON(http.StatusOK, response)
}

func (h *Handlers) Register(c *gin.Context) {
	// TODO: Implement registration logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) RefreshToken(c *gin.Context) {
	// TODO: Implement token refresh logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

// User management handlers
func (h *Handlers) GetUserProfile(c *gin.Context) {
	// TODO: Implement get user profile logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) UpdateUserProfile(c *gin.Context) {
	// TODO: Implement update user profile logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) ListUsers(c *gin.Context) {
	// TODO: Implement list users logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) GetUser(c *gin.Context) {
	// TODO: Implement get user logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) UpdateUser(c *gin.Context) {
	// TODO: Implement update user logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) DeleteUser(c *gin.Context) {
	// TODO: Implement delete user logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

// Repository management handlers
func (h *Handlers) ListRepositories(c *gin.Context) {
	// TODO: Implement list repositories logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) CreateRepository(c *gin.Context) {
	// TODO: Implement create repository logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) GetRepository(c *gin.Context) {
	// TODO: Implement get repository logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) UpdateRepository(c *gin.Context) {
	// TODO: Implement update repository logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) DeleteRepository(c *gin.Context) {
	// TODO: Implement delete repository logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

// Artifact management handlers
func (h *Handlers) ListArtifacts(c *gin.Context) {
	// TODO: Implement list artifacts logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) GetArtifact(c *gin.Context) {
	// TODO: Implement get artifact logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) DeleteArtifact(c *gin.Context) {
	// TODO: Implement delete artifact logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

// Tag management handlers
func (h *Handlers) ListTags(c *gin.Context) {
	// TODO: Implement list tags logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) CreateTag(c *gin.Context) {
	// TODO: Implement create tag logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) DeleteTag(c *gin.Context) {
	// TODO: Implement delete tag logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

// System management handlers
func (h *Handlers) GetSystemStats(c *gin.Context) {
	// TODO: Implement get system stats logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}

func (h *Handlers) GetAuditLogs(c *gin.Context) {
	// TODO: Implement get audit logs logic
	c.JSON(http.StatusNotImplemented, gin.H{"error": "Not implemented"})
}
